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Nikitich [7]
3 years ago
9

10pts Body Systems Interactions WebQuest Choose 7 out of the following 10 situations and use the Internet to research and write

an answer to the two questions. Remember to write the answers in your own words and to cite the sources of your information. Copying materials will result in a zero for the assignment. What two (or more) systems are involved in this process? How are they involved? Situations Playing a video game Getting energy to sit through class by eating cereal and a banana Going through puberty Touching a hot pan and yanking your hand away Jumping up and down Drinking water on a hot day Sneezing Blushing Hitting your head on the top of the car as you get into it Breathing harder during a jog For Example: Delivery of oxygen to the blood Answer: The respiratory system draws in oxygen-filled air from the environment through the nose and trachea to the lungs. In the tissues of the lungs, blood vessels cover the tiny air sacs called alveoli. Here, the oxygen is exchanged with the carbon dioxide being dumped by the blood. As part of the circulatory system, the heart pumps the blood to the lungs, and then to the rest of the body through arteries and veins, to deliver the oxygen to all the cells and pick up the carbon dioxide.
Chemistry
1 answer:
GuDViN [60]3 years ago
6 0
<span>systems are involved in this process, How are they involved? 
The way that you touching </span><span> a hot pan and yanking your hand away is your body saying that "Aye, This isn't right" and our nerves go to the source where you had touched the hot pan... sending the signals to your brain,  Your hand might have a small blister..the reason why that is, because its your bidy naturally healing its self with an internal wound</span>
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Calcium reacts with water. This reaction is represented by the balanced equation below. The aqueous product of this reaction can
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The aqueous product conducts electricity while the solid does not. Ionic solids do not conduct electricity, but ions dissolved in solution do. The chemical name of the base is calcium hydroxide. Increasing the temperature of the system would increase the rate of the reaction.
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Which statement is true regarding a hydrogen bond? It is weaker than dipole interaction forces. It is weaker than London dispers
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How much would a 50-kg object weigh on Mercury (gravity on Mercury is 3.59 m/s2)?
Andreyy89
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3 years ago
18.2 mL of a 0.156 M solution of lead(II) nitrate are added to 26.2 mL of a 0.274 M solution of potassium iodide.
kow [346]

The mass of the Pbl2 : 1308.87

<h3>Further explanation</h3>

Given

18.2 mL of a 0.156 M Pb(NO3)2

26.2 mL of a 0.274 M KI

Reaction

Pb(NO3)2 (aq) + 2 KI (aq) - Pbl2 (s) + 2 KNO3

Required

the mass of the Pbl2

Solution

mol Pb(NO3)2 = 18.2 x 0.156 = 2.8392 mlmol

mol KI = 26.2 x 0.274 =7.1788 mol

Limiting reactant Pb(NO3)2(smaller ratio of mol : reaction coeffiecient)

mol Pbl2 based on limiting reactant (Pb(NO3)2)

From equation, mol ratio of Pb(NO3)2 : Pbl2 = 1 : 1, so mol Pbl2=mol Pb(NO3)2=2.8392

Mass Pb(NO3)2 :

\tt mass=mol\times MW\\\\mass=2.8392\times 461\\\\mass=1308.87~grams

5 0
3 years ago
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